Yikes! I'm surprised they did the vaccination with your baby having a cough. Someone mentioned earlier in this thread that vaccines can make it worse, my vet even advised to hold off on Maggie's, since she's due for her annual.
I feel so bad for your sweet thing! We have been doing antibiotics since early December and its only been this last week that her cough has gotten better, not gone but better.
The shower idea I felt really helped her too! It can't hurt.
Also if you are doing antibiotics for a while try getting a good probiotic to help their immune system |